查看用户在某个对象上面的使用权限

查看用户在某个对象上面的使用权限可以用数据字典表DBA_TAB_PRIVS.表结构如下:
Name Null? Type
----------------------------------------------------------------
GRANTEE NOTNULLVARCHAR2(30) <==权限获得者
OWNER NOTNULLVARCHAR2(30)
TABLE_NAME NOTNULLVARCHAR2(30)
GRANTOR NOTNULLVARCHAR2(30) <--权限授予者
PRIVILEGE NOTNULLVARCHAR2(40)
GRANTABLE VARCHAR2(3) <--权限获得者是否有权限授予别人权限

权限由命令GRANT授予由命令REVOKE收回:
GRANTselect,insert,update,delete,referencesONmy_tableTOuser_joe;
REVOKEinsert,deleteONmy_tableFROMuser_joe;
GRANTcreatepublicsynonymTOuser_joe;

其他相关权限的数据字典表有:
ALL_TAB_PRIVS
ALL_TAB_PRIVS_MADE
ALL_TAB_PRIVS_RECD
DBA_SYS_PRIVS
DBA_ROLES
DBA_ROLE_PRIVS
ROLE_ROLE_PRIVS
ROLE_SYS_PRIVS
ROLE_TAB_PRIVS
SESSION_PRIVS
SESSION_ROLES
USER_SYS_PRIVS
USER_TAB_PRIV

在做完EXP/IMP后,权限需要重新授予时可用下面的脚本:

setechooff
rem
rem 19980729 MDPowell Newscript.
rem
setverifyoff
setpagesize0
setfeedbackoff
spoolgrt_&&owner._&&table_name..sql

select'REM grantson&&owner..&&table_name'
fromsys.dual;

select'grant'||privilege||'on'||lower(owner)||'.'||
lower(table_name)||'to'||grantee||
decode(grantable,'YES','withgrantoption',NULL)||
';'
from sys.dba_tab_privs
where owner =upper('&&owner')
and table_name=upper('&&table_name')
orderbygrantee,privilege;

spooloff
undefineowner
undefinetable_name